2-Chloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Aromatic Internal Standard

1,2,3,4-Tetrachlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL,

Methylmalonic acid, 100 µg/ml, Acetonitrile, 1ml